Impact of Q-balls formed by first-order phase transition on sterile neutrino dark matter
Year: 2024
Type: article
Abstract: We explore the mechanism that can explain the production of lepton asymmetry and two types of sterile neutrino dark matter. The first type involves heavy sterile dark matter produced directly by the decay of Q-balls which are formed by first-order phase transition in the early universe; the second consists of keV sterile neutrino dark matter, produced resonantly with the aid of lepton asymmetry from Q-ball decay. Besides, gravitational waves from cosmic strings generated during the phase transition process could be detected at future interferometers.
Source: The European Physical Journal C
Authors: Jiucheng Ma, Siyu Jiang, Xiu-Fei Li
Institutions: Sun Yat-sen University, Inner Mongolia University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4403173769